In the flashback where Ryuko sees the girl who killed her father jumping away the girl's hair is straight like satsuki's, it looks nothing like the fluffy hair of harime nui. Wonder if that's going to factor in somewhere.

Spoiler :

But they actually showed how she killed her father, so no doubts about it...Probabl was a technique to confuse us xD

wow, ep 15 was amazing, so much cool stuff happening. I cracked up whenever the nudist beach guys showed up. This is one of the few series where both the protagonists and antagonists are both awesome even though they're completely different character types

oh Sh!t, this series is fricken gold, they consistently raise the bar with just about every episode and now we get a bunch of back to back revelations. Argh I love this series so much, definitely one of my top favorite series ever right now

Spoiler :

I suspected the Ryuko and Satsuki might somehow be related but they did a good job of hiding it by not revealing that she had another sister until this episode. If they had shown that earlier it would have definitely been a lot more obvious.

But this clinches it, both Satsuki and Ryuko are duel protagonists of this series, which is awesome in that this series actually pulled it off well. Satsuki steals the spotlight with her cool lines all the time but it's awesome how they switched her from being the main villain to being one of the heroes now